disodium [3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-4-hydroxybenzenesulphonato(3-)][1-[[2-hydroxy-5-(phenylazo)phenyl]azo]-2-naphtholato(2-)]chromate(2-) - Names and Identifiers
disodium [3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-4-hydroxybenzenesulphonato(3-)][1-[[2-hydroxy-5-(phenylazo)phenyl]azo]-2-naphtholato(2-)]chromate(2-) - Physico-chemical Properties
disodium [3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-4-hydroxybenzenesulphonato(3-)][1-[[2-hydroxy-5-(phenylazo)phenyl]azo]-2-naphtholato(2-)]chromate(2-) - Introduction
disodium [3-[(4,) azo]-(3-)][1-[[2-hydroxy-5-(phenylazo)phenyl]azo-2-naptholato (2-)]chromate(2-) is a compound also known as yellow G pigment. The following is a description of the properties, uses, preparation and safety information of the compound:
Nature:
-Appearance: Yellow Crystal
-Solubility: Soluble in water, slightly soluble in alcohol and ether
-Stability: stable under light, but will decompose in the presence of strong oxidants
Use:
-As dyes and pigments in organic synthesis, it is often used to prepare dyes and pigment intermediates
-For coloring of dyes and ink pigments
-For the preparation of pigments and inks
Preparation Method:
The compound can be prepared by the following steps:
1.3-[(4,5-Dihydroxy -3-methyl -5-oxo -1-phenyl -1H-pyrazol-4-yl) azo]-4-hydroxybenzenesulfonic acid and [1-[[2-hydroxy-5-(phenylazo) phenyl] azo]-2-naphthalenone] are dissolved in an appropriate solvent, A solution is formed.
2. Add a divalent chromium compound, such as chromium sulfate or chromium nitrate, to react with the solution produced in the previous step.
3. The product is precipitated, separated by filtration or centrifugation, and then washed and dried.
Safety Information:
-The compound may cause irritation when in contact with skin, eyes, or respiratory tract, and precautions should be taken, such as wearing goggles, gloves, and masks.
-Avoid inhaling dust or solutions.
-Waste disposal shall comply with relevant laws and regulations.
-When using this compound, Good Laboratory Practices should be taken and chemical safety procedures should be followed.
Last Update:2024-04-09 01:59:53